New Balance · Waterproof Sports & Performance Undergarments
New Balance Men's Moisture Wicking Lightweight Breathable Boxer Briefs
Lower concern. Boxer briefs lack typical water-repellent coating finishes where PFAS is common.
Moisture-wicking textiles don't require PFAS treatments like waterproof apparel does. New Balance discloses no PFAS info, but synthetic blends in basic underwear carry minimal elevated risk versus untreated cotton.
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Material
polyester/nylon blend with moisture-wicking finish
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
Category baseline
clothing is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
The full breakdown
What it's made of and why it matters
This product is a polyester/nylon blend with an applied moisture-wicking finish. Polyester is a synthetic polymer stable under normal wear conditions; nylon adds elasticity and durability. The moisture-wicking treatment is typically a hydrophilic chemical coating (often polyurethane-based or silicone-derived) that channels sweat away from skin. This blend combination is one of the most common in performance athletic wear and has a long track record of predictable performance with minimal off-gassing or leaching under typical use.
The brand's record and disclosure
New Balance has not publicly disclosed comprehensive chemical hazard testing or supply-chain certifications for apparel lines, and the brand maintains silence on PFAS use in textiles. However, New Balance has no documented recalls or safety violations specific to boxer briefs or moisture-wicking underwear. The brand is a mainstream athletic manufacturer with standard regulatory compliance but does not lead in transparency reporting compared to some competitors.
How it compares in its category
Performance boxer briefs are a commodity segment. New Balance's offering sits in the mid-market tier: it avoids some premium certifications (GOTS, Oeko-Tex) that competitors market, but also lacks the cost-cutting corner-cutting of budget brands. Most moisture-wicking performance underwear in this category relies on similar polyester/nylon blends and applied finish treatments; New Balance's formulation is typical and does not stand out as higher or lower risk than comparable athletic brands.
If you buy it
Wash in cool to warm water (below 60C/140F) and air-dry or tumble dry low to preserve the moisture-wicking finish; hot water and high heat can degrade applied coatings over time. Replace after 50-100 washes or if elastic fails, waistband sags, or moisture-wicking performance noticeably declines. No special detergents are required; standard laundry soap works fine. Avoid chlorine bleach and fabric softeners, which can interfere with hydrophilic treatments.
Beyond PFAS: other things we checked
Established hazard classes for this product type, assessed from public information. These never change the PFAS grade; a Likely flag caps the Verdict at “Buy with care.”
Formaldehyde resins in textile finishing
No formaldehyde-based durable-press or wrinkle-resist finishes are typical in moisture-wicking athletic wear. This product is unlikely to contain formaldehyde resins used in dress shirts or permanent-press apparel.
Azo dyes and colorant heavy metals
The black, navy, or colored variants may use azo dyes or pigments that could contain trace heavy metals (cadmium, lead). Established public records do not show specific testing failures for New Balance boxer briefs, but colorfast synthetic textiles routinely contain low levels of such dyes; migration to skin is considered minimal under normal conditions.
Antimony in polyester
Polyester commonly contains antimony trioxide as a catalyst residue from manufacturing. Residual antimony in finished textiles is typically below 50 ppm and is not considered a significant dermal hazard during normal wear. No recall or clinical evidence of harm from antimony migration in athletic underwear is on record.
Flame retardants in blend
Moisture-wicking boxer briefs are not subject to flame-resistance regulations (those apply mainly to sleepwear for children). No additive flame retardants are reported in this product category.
Degradation of applied moisture-wicking finish over repeated washing
Polyurethane or silicone-based moisture-wicking coatings degrade gradually with heat and mechanical stress. After 50-100+ wash cycles, the hydrophilic finish can thin or flake; this is normal wear, not a safety hazard, but signals replacement timing to maintain performance.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 72% confidence. It is not a lab result.
No independent PFAS lab test is on record for this exact product. A lab test could move the score in either direction.
The brand has not made a specific, verifiable PFAS-free statement, so part of this score reflects that missing disclosure rather than a confirmed material.
Formulations and coatings change between production runs. Always check the current label before buying.
More waterproof sports & performance undergarments grades
How we score: every product runs through the same public 0–100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.